HP 2000 Notebook Black screen

I watched a youtube video showing the the reason for black screen issues is due to the soder on the video chip.

I am having this issue on a laptop Hp 2000-329WM I am working on. I connected an external monitorr to it and the only thing showing is the curser? I have tried the removing the battery, holding power button down trick and did not work. When it boots up sometimes i can see the words then it goes a light gray screen? There are no lights blinking? I want to make sure there is no other steps I could try before I spend the money to replace the motherboard?